File:Lunar nodal precession and Moon's declination.webm
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Original file (file size: 93.88 MB, MIME type: video/webm)
Summary
| Description |
Français : À gauche : Représentation animée du système Terre-Lune-Soleil dans un référentiel géocentrique. L’axe reliant les nœuds lunaires subit un mouvement de précession rétrograde, et effectue un tour complet sur lui-même sur une période de 18,61 années.
À droite : Une sphère céleste illustre le mouvement apparent du Soleil et de la Lune pour un observateur situé sur Terre à la latitude 51°10′44′′ N. L’amplitude de la déclinaison de la Lune est maximale en tout début de cycle de précession (lunistice, ou arrêt lunaire, majeur), et minimale en milieu de cycle (lunistice, ou arrêt lunaire, mineur).
English: Left: Animated representation of the Earth-Moon-Sun system in a geocentric reference frame. The line of lunar nodes experiences retrograde precession and completes a full rotation over a period of 18.61 years.
Right: A celestial sphere depicts the apparent motion of the Sun and Moon as seen by an observer located on Earth at latitude 51°10′44′′ N. The Moon’s declination amplitude is maximal at the very beginning of the precession cycle (major lunar standstill), and minimal at mid-cycle (minor lunar standstill). created with GeoGebra Classic |
| Date | |
| Source | Own work |
| Author | Le Grand Quadrille |
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 23:24, 15 February 2026 | (93.88 MB) | wikimediacommons>Le Grand Quadrille | Reverted to version as of 14:58, 14 February 2026 (UTC) |
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